Weighing scale



Nov. 6, 1928.

O. MALCHER WEIGHING SCALE Filed Feb. 2, 1924 4 Sheetsheet 5206722237 OzJ7@ Zc/z er O. MALCHER WEIGHING SCALE Nov. 6, 1928.

Filed Feb. 2, 1924 4 Sheets-Sheet I Nov. 6, 1928. 1,690vg123 A o.MALcHER WEIGHING SCALE Filed Feb. 2, 1924 4 sheets-sheet e Nov. 6, 1928.

O. MALCH ER WEIGHING SCALE Filed Feb. 2, 1924 4 Sheets-Sheet 4 PatentedNov. 6, 192.8;

,a j 1,690,123 y other..

wmeme scemi.

Appnaatiun niet February 2,119'24; serial ne. 690,134.

This invention relates to Weighing scales of the'type in which dropy'Weights are used for increasing the capacity` ofthe scale bev yondthat covered by rangeof movementJ of the indicator, and has io'r' one ofits lobjects `the provision of means fior exhibiting the Weightsdirectly irrespective of lthe number fof drop Weights-deposited.

A further object is the provision of indieating means `which shall be'easy to read Without chance Vof error. l

A further object is to provide a scale ofthe class ldescribed whichshall be vof improved constructioi'i and Operation.

The invention is'exemplied inthe combi- -nation'and arrangement oiparts'shownln the 'nccom'p'anying,Y drawings and described inthefollowing specification, and it ,is more particularly pointed out intheappendedclaims.

In the drawingsi Fig.v 1 Ais a front elevation showing a porL` tion of aWeighing scalewith one embodiment of the present invention vappliedthereto; n p l Y l y Fig. 2 is a fragmentary elevation with partsinl'sectio'n lookingr from the right in Figz 1;

Fig. 3 is a diagranfnnatic.view showing a dial arrangement'for a scalein `Wluchthe dial has a capacity of -1000 pounds-and drop "eie'hts'areemployed orinc'reasmgthe calpacity by units of 1.000 pounds;

Fig. 4; is a diagrammatic View sliowinga 'dial arrangement for a scalein which the dial has a rangefoi 200 pounds; p

Fig, 5 shows an arrangement in Which-the dialhas wrange/of 500'pounds;and Fig. 6 is `a fragmentary elevation, with "parts infsec'tion;looking- Vfrom theV right. in

Fis. 5. y

' lReferringfiirst vto'rligjrs. 1 andv `2, 'the nu,- meral 10 designatesa scalebeam having a rack "11 Aconnected therewith and meshini! "with a:pinion 12 which operates a disc 15in aman-ner Well known in the art.The scale lfie'am' 10'h`as avcounterpoise 14 susw pciided therefrompioifidedat its `lowerend vwith 'a disc V15 for receiving a series ofWeights 16. KThe Weights "16 are'suspended in a cage shaft-21 having a-gear WheelQQand a ratchet i 1,7 Whichi'ssupported bya cable 18 mountedV'uponapu llty 19 and provided with a counterweiglit 20. The pulley 19is securedftoa Wheel QSattac'h'ed thereto. The ratchetwheel heldbyatfo'oth 24 on a leiter 2.51,' the'lieyer 'being provided with aspring 26 for Vholding opposite the yreading line;

in the ratchet wheel.

When it is desired todeposit a weightupon the disc 15the leverQisdepressed to permit `rotatlon of the `ratchet Wheel an amountcorrespol-iding;r to the distance between the the 'toothiuenga'gementwith the-notches 27 'notches 27. This will lower the cage 17 aVdepositedonthe disc `llto counterbalance the leven multiples of 1000pounds, and tlieexcess over. the amount 'counterbalanced by the weights'16 will be indicated by the dial It Vvill be apparent therefore that inorder `to indica-te the correct Weight it `will be necessary to prefixto the 'indication on the dial 13 the number corresponding 'to thenumber of counterweights deposited.` This operation is effected by'means of a disc 28 journaled 'at 29V `and having apinion securedthereto. The

pinion 30 vmeshes Wit-h a rack 81 which inturn 'meshes with a pinion 132securedto a gearf which meshes with the gear 22011 the shaft 21. Aseries 'of numerals vSeis spaced 'about the disc 28 in position to bebrought adjacentthe `*peril'jhery ofthe disc `13 at'thereading line.

Vhen the cage 17 is in its upper position the portion ofthe disc 28opposite the reading line will beblank. When-a single Weight aVsuficient amount to bring the numeral 1 opposite the reading-line. ItWill thus be seen that the numeral 1 Will be prefixed tothe indicationsyon the dial 13 Whena single Weight is deposited. This is the conditionrepresented in Fig'. 1 or' the drawings. lVhen a vsecond neig'ht'hasbeen deposited the dijsc Q8 `willberotated to bring the-numeral 2 Inlikemanner a different numeral will beb'roug'ht'into reading' positionVatter'the'c'iep'osit 'of each Weight.

In order to facilitate reading the indicavtions, alens is placedinfront'of the opening 36 throughfwhicli thezreadingsare visible. Thelenses preferably has-a fiaty raee adjacent the opening 36 andfhafsi)Jcylindrical conve-x face `directed away *frein 'the lopen- Ahas beendeposited the disc 28 will befrotatedv Y through the slot 38 'formovement ot the sca i,

ing. This form ot lens increases the height oi the numerals andmagnilies the spaces he tween the indicating lines onthe'dial 1?). Tofurther magnify the readings7 a iensl' positioned in liront ot the lens35 and spaced slightly therefrom. rlhe lens 37 is preterahly a doubleconvex lens having' spherical. suri tacos. possible to distinctly seethe readings in niagnilied proportions and greatly facilitates theaccuracyand ease with. which Vthe readings are taken. f

F S shows the arrangement of; the numorals on the tivo dials i3 and 28for indicatine readings 'trein zero to 1000 pounds. This is thearrangenjient described in connection with Figs. l and 2.

i ll l shows the dial arrangement l'or a scale in which the capacity ofthe indicator is-Q-UO pounds andthe drop Weights increase the capacityhy units of ZOO pounds.I In, this arrangement thereare two sets oitlreadings on thedial i8 each ranging` -trom Zero to lOl). Adjacent the o'read ines there are arcuate slots 28 and 39,7respoctively. The inneredge oli-one ot these slots is the same distance. from the center oit'the 'disc as the outer edge of the other slot land one end ot .the slot38 registers,angularly with the adjacent end oi. the slot 89. The slotsare beveled slightly at their corners to provide a siuuporting`connection 4:0 for the portion ot the disc outside the slots. A greaterspace may be letty hetween the opposite ends of the slots and the scaleso proportioned that the disc will malte slightl-7 more tl an a completerevolution Alor aV 200 pound Weiz-.tht ,In this case the dise 28` isprovided with heures arranged in dit ferent radial zones, the figuresheingfdisposed in pairs slightly otlset-angularly relative to oneanother;

At the position opposite the readine line` the single numeral l will bepositioned in the outer radial Zone and it will he apparent that thisnumeral will he hidden when the disc 13 is in its zero position and willremain hidden for the first 100 pound movement ot the dise, the disc 13traveling in a countercloelwise direction. As soonas the 100 poundposition has passed the readineypoint the slot- '39 will registerrWiththe numeral l on the disc Q8 so that durinerthey second 100 poundmovement the numeral. 'l will he prelixed tothe numbers adjacent theslot 39, thus'indicat- "ing: 100 pounds1 plus the reading adjacent theslot. 39. In this Way the scale Will indicate correctly up to 200pounds.

It' a Weight greater than 200 pounds is placed upon the scale pan acouuteriveignt lo Will he deposited upon the scale heain Which willrotate the disc 28 to brine' the dise Q8 into its second position. kInthis position the numerals 2 and 3 Will he adiacentV the read ingpointand the nun'ieral 2 Will he exposed This cou'ihination ot lenses makesit.

up to 300 pounds when the, numeral u'ill appear through the slot 3). ltwill he noted that the numerals 2 and 25 are svsliihtly oll'retangular-ly relative to one another so that l'or points approxiinatinfthe 300 pound limit there `will he a slight space in which onereadingwill appear harina' Q au a preli; and a dilierent reading` vfillappear having il as a prel'ix, the readii'ip; line, hinterei-` willindicate which ol" these readings irulifg'ates the Weight olf thearticle on the platlorin. Other pairs ot numerals for @heater weightsare provided corresponding to the dillerent countorpoif--fes lo, p

Figs. 5 and 5 indicate an arrangement ot parts tor a disc capacity oit500 pounds. In this arrangement the dial 13 is provided with series oi'radially o'll'set slots lL 42, lll). lift and 45. The disc 2S has setsol nun'ierals disposed thereon similar to those in Fin'. et, hut y inthis case each set comprises live numerals` each numeral heine` oilisetradially and anguylarly relative to the` others, as shovfn in l `if 5.The disc 28 is rotated inthe manner already described to bring thedilllerent sets of numerals .adjacent the reading` point for thedillerent counterweightsas they are deposited. For Weigh ts fr 1,'1 Zeroto 50() pounds the nuineralson the dise QS will he trom aero to il, 1hutthe zero numeral may be omitted as itis meaningless. For the lirst 100pounds there will he no nun'iher prefixed to the readings on the dial1li-l. Alfter 'the 100 pound niark is passed the numeral l Will he(.lisclosed throughthe slot 42, and after the 200 pound position ispassed the numeral 2 Will he disclosed through the slot 4?), and so onup to the capacity ot the scale.

Since the numerals ot'each set are otl'set angularly relative toone-another it Will he apparent that the position olf the preixednuinliers will'change relative to the reading line as the dial rotatestrom one position to another. To correct this di'l'liculty provisionismade for shitting' the reading' point. To do this a reading-j lineindicator M5 is pivoted on the axis ot the scale dial lil andis providedwith a. downwardly extending' arm`47 Which hears against a cam :tace 48.secured to the .iclilt The cam tace i8 may he held adjustahly to therael-r hv means ot' pin and slot connections {if} to provi(Y e forpropel.' adjustnient ol' the readingrline. lt will thus he seen that asthe dial 13 rotates the iiujlicator ll() 'will he moved ahoiiit itspivot so that it lwill al 'ars designate a reading' line in reeistrationwith the particular one of the prefixed nuniliers exposed hy the slotsin the dial. The cam lace LS should he properly laid out to produce.nitform movement oil; the indicator 46 for a niven angular inoreinentotthe dial and since the angular relation ot the arin t7 changes slightlyrelative to the cam face i1-8 it will he apparent that the Ylace Ll-Swill not he exactly a straight line. although il; Will very closel)rLegolas X y approach .la straight flinefsinc'e 'the reading llnel `is'varied Yuniformly relative to the rota-v tion ofthe disc. Thecalibrations onthedise` .will be made .with reference tothe readingline4 indicator 146 Van'd'not tolar fixed point, but since both.irrenibersare eontrolledbyithesaine rack the correction ortheshit-ingreading linie'is nerely'a matter of,calibratim1-` f 1 lpifw-eighingscale comprising` a 'rotary i dise havingnurnerals on a 'flat face'.thereof forintlieating weights,l a second trot-ary'disearranged-adjacent said frstdisc. vand 'having unimi-als on a flatfacethereotto berend in conjunction ivith thev numeralszoni said firstdie@ and. Weight controlled in'eans for rot-ating said first mentioneddisk'. .i l SLA weighing scale :comprising disohaving ndmerals disposedtabout the "pf riphery thereot'fonil-one. oit' its flat fades, meansforfinere'asingl the `'capacity of `'said scale beyond tliearnonntindicated by the nu-V ineralsfonfsaid disc, a yseeonddisc having'nuinerals thereon arranged to *be f dispossedV in prefixed relation `to.the nuhierals onsaid rst disc, and means'for'foperating"said sebond.disffriointhe capacity increasing means( In "a Weighing Scale, theCombination ,with a Weight controlled'. Inovfall Tnember, 'ofadialfhaving a aange, corresponding to the range of 'movement lof "saidmridien `means for depositing counterweightsnsaidfinemseconddialcontrolled. by

ber VE'to Iineeafse': the "Capacity 'of said scale, a Y did Weight de*Vpositinf); means arranged `"adj acent fsauid first dial and'havingnumeralsthereon, and means cUnneCt-ingsaidserond dial 'with said Weightkdepositing means' foroperating saiddial to bring. different. numeralsf'in 1prefixed relation to the numerals on saidfrst dial toproduce atotal reading. corresponding to the `Weight. represented by the:Counteriveiglits deposited, plus the weight. representedbyfthe 'weightof said n'iov'able nie'in'ber and inesflor rel' taining said secohd dialstationary While said first ldialis moved safld Weight Controllednieinber; y. l, t

4. In 4a Weighing sbalesa nlova'ble' dial having numerals!thereon, saiddial having an opening therein tofl tliselose other l"numerals inprelx'ed relation to the nnineralsonsaid .dial and means for supportinga numeral in registration with said opening whil'esaid'dial moves* 1 y yj 5l In a tif'eighiiig scale a dial havingweireuniferentially arrangedgraduations' therefonfandhavihg an arcuate slottheiethrough injuxtapositloiito said graduations to dis- -elosef Characters Vto befread in conjunction with said grliduations `and rmeans `lor pre'-senting Charabters 1n ypositron tofbe disclosed through"sind .slot andwhen so disclosed to i 4cefnstitute one deoiinal'forderf'of afcoiiipletenhillbeig'tlie' other deeiin'al orders df Whieh comprise numbers on saiddial.'

a rotary 6i: In :a weighing-scale, a dial having cirouinferentially`arranged rnumerals thereon and .having aniarouate slot therein arranged'adjacentfsaitlfnumerals in the positionof the next. higher decimalorder above Vthel 'highest order ofsaid numerals, anda second dial Yhaving numerals thereon arranged to 'regis'- tertvithsaid slot.. f K I7, Awighingscale compri'singa dial hav# ing'circumt'erentially'"arranged Inumeri/ils thereon and having anarcuateslot'therein disposed fadijacentisaid numerals, a .Weight ycontrdlledmember for operating said dial,`

a second ldial having numerals thereon arranged' to register with. the'-`Slot .iir saidy rst dial,J sind ."cunterweight depositing. mecha- Yn'i'slnforopeating said second dial to lbring different numerals intoregistration with, said' Y slots therein .adjaeentfsaidk YVsets" `ofnumerals,

'the slotaldjfacent eachset being inthe-psition of one decimalorderaofthenuinerals olf-that set and adjacent ends of said slotsbeingar` VAranged in angular registration Withone an 1o. A1 sans ein havingai plmiity., of Sets :offpripherally `arranged graduations there- "on,"arcuate slots ladjacent said "igradiations, said `slots having adjacentlends thereof farrahged in registration with a eoinnion radius ofsaiddial and'fset 'radiallyrelativelto one another, there' f being' faconnecting yportion ot saidvl dial interposed between'the Iadjacentendsofsaidl'sl'ots; g o,

."fIn a Weighing 'sehlefadialhaving cireunifere'ntially arrangedVnilnierals thereon, a secondl dial arranged'adjacentsaid first dial but.ece'ent-rically thereof andl jhavingwnulnerals thereonfarrangedftberend in deei-v nialfrde with the n'umeialsA on .said first difah' saidldial having) a iportionthere'of cut 'away Eto" peilhit the Characterson said seeond dial to be seen, 'f

"12. A Weighing scale'veoinprising a dial having arcuately arrangednumerals thereon',

a "sec'ond dial disposed "adjia'een tV said first diall and'having'lnuni'erals thereon arranged in pairs ol'setrelativ'e toeneanother, said first dial having offset ikcuty-zwvay portions* to-seleotiiiely expose `thenurfnerals on said second 'dialin dei'malfrderwith respeotto ditferent llaiinieralsl jn said first dial'.

"13. In a "weighing'fsoale, a dial'having a plurality of sets ofciroumterentilly farranged numerals thereon, a Weight controlledmember-'for operating said dial, said dialvhaving offset cut-awayportions adjacent said sets of graduations, a second dial having aplurality of sets of characters thereon, means for increasing `thecapacity oi said scale beyond the capacity of `said iiist-mentioneddial, and means controlled by said capacity increasing means forrotating said second dial to bring different characters intoregistration with said cutaway portions to permit said characters to-beread in conjunction with the characters on tioned dial.

14. In a weighing scale, a graduated member, a reading line indicator,and Weight controlled means for shifting said reading line indicator andgraduated member in the same direction.

15. A weighing scale comprising a rotary dial, a Weightcontrolledmember, a reading line indicator, and 'means connecting saidWeight controlled member to said dial and indicator to shift said dialand indicator amounts proportional to the movement of said Weightcontrolled member.` Y

16. Ina Weighing scale,a dial having a plurality of sets of graduationsthereon, a second dial having offset characters t0 be read inconjunction with the graduations on said first dial, and a movablereading line indicator for indicating the reading line of said dials. i

17. In a Weighing scale, a dialhaving a plurality of graduationsthereon, said dial having oiset cut-away portions adjacent saidgraduations, a second dial having otset charactersthereon, means formoving said sec 0nd dial to bring the characters thereon intoregistration With the cut-away portions of said firstdial, a readingline indicator for said dials, and Weight controlled means for movingsaid first-mentioned dial and reading line indicator.

18. A Weighing scale comprisingr arotary dial having a plurality of setsof numerals thereon, said dial having offset slots therein registeringWith the different sets of numerals, a second dial having dii'ferentsets ot offset characters thereon, drop, Weight mechanism for rotatingsaid second dial to bring the various sets of numerals into readingposition, ar reading line indicator for said dials, and Weightcontrolled means for moving said first-mentioned dial and reading lineindicator.

19. A Weighing scale comprising a pair of dials arranged adjacent oneanother,A means :for moving said dials to bring characters thereon intoposition tobe read in conjunction With one another, a lens having acylindrical `tace disposed adjacent tlievreading point for said dials,and a double convex lensjpositioned in front `of said first-mentionedlens. 'l A said irst-men- 20. In a Weighing sca-le, an indicator com*prising a pair of dials having numerals thereon, Weight actuated meansfor moving said dials to'bring characters thereon into juxtaposition ata reading point, and a pair of lenses supported in spaced relationadjacent said reading point.

21. Ina Weighing scale, an indicator comprising a pair of dials havingcharacters thereon, means for actuating said dialsto bringsaidcharacters into position to produce diiferent combinations at a fixedreading point, and' a pair of spaced lenses for viewing the charactersat said reading point, one of said lenses having a cylindrical face andthe other of said lenses having a spherical face.

22. In a Weighing scale, an indicator comprising a pair of movable dialshaving characters thereon, means for moving said dials to bring diierentcharacters into juxtaposition at a common reading point, a lens havinga. convex cylindrical surface fixed adjacent said reading point, and aconvex Spheri- Callens positioned in front of said cylindrical lens andspaced therefrom.

23. In a Weighing scale, a pair of dials, onev of said dialsl having anarcuate slot therein and the other of saidl dials having numeralsthereon in position t0 be disclosed through said slot, and means forseparately rotating said dials.

24. In a Weighing scale, a pair of dials,

one of said dials having an arcuate slot therein and having numbersadjacent said slot While the other of said dials has numbers thereonarranged to appear through said slot in prefixed relation to the numberson said rst-mentioned dial, and weight controlled means for rotatingsaid first-mentioned dial. i 25. In a Weighing scale, a pair of dials,one of said dials having an arcuate slot therein and having numbersthereon adjacent said slot While the other of said dials has numbersthereon arranged to appear through said slot in prefixed relation to thenumbers on said first-mentioned dial, Weight controlled means forrotating said firstmentioned dial, and hand controlled means `forrotating said secondmcntioned dial.

26. The combination with a weighing scale having a Weight controlled`member and hand controlled means for increasing the capacity of saidscale above that of said Weight controlled member, of a pair of dials,one of said dials having an arcuate slot therein and numbers adjacentthereto While the other oi said dials has numbers thereon arranged toappear through said slot in prefixed relation to the numbers on saidfirst-mentioned dial, said iirst-inentioned dial being rotated by saidWeight controlled means While said second-mentioned dial is rotated bysaid hand controlled means.

y27. The combination with a Weighing scale having characters thereonVfor indicating Weight, of a lens having a cylindrical face positionedadjacent to said characters and a second lens having a spherical surfacespaced away iroln said first lens and providing means for magnifyingsaid characters as viewed through said lenses. v Y e 28. The combinationwith a Weighing scale 10 having a reading line thereon, of a lens havinga cylindrical face curved about a horizontal axis and placed adjacentsaid'reading line, and a secondlens having' a sphericall f convex face,said second lens being arranged in front `of 'said first named lens andin position to cooperate therewith, for magnifying the charactersdisplayed at said reading line.

In testimony whereof I have signedmy name to this specification on this30th day of 20 January, A. D. 1924.

` OTTO' MALCHER.

